<template>
  <div>
    <button @click="count += 1">{{ count }}</button>
    <mark @click="$emit('xx-yy')">++parent</mark>
  </div>
</template>

<script>
export default {
  data: function () {
    return {
      count: 10,
    };
  },
};
</script>

<style>
</style>